Nut and bolt lock



Jan. W, 1928.

A. c. JoYAL NUT AND BOLT LOCK Filed Dec. e. 1925y I jm/vanto@ AURELIUS c. JoYAn Anatalia PATENT OFFICE OF vNOLRBIJRI MANITOBA, CANADA..

nur Ann BOLT Loox.

aplicaran sied necember s, iefeal yserial No. 153,402.

This invention relates to a nut and bolt lock and has for its primary object 'the provision, in a manner as hereinafter set forth, of a'nut and bolt lock structure of a design e adapted to be easily and quickly placed in position, strong and durable, and eiiicien't.

LThe invention contemplates the provision of a bolt having a short portion of the free .end thereof of less diameter than the body xu of the shank and provided with left hand threads. A nut adapted to be threaded upon the bolt shank and provided withtlie surrounding lateral extendingiiange at the' outer end thereof which :flange has its under la tace provided with ratchet teeth. An outer nut is designed to be threaded upon the adj acent portion of the shank and has a part thereof of thefsame diameter as the surrounding lateral extension upon Vthe nut and fur- 20 ther provided with screw threads. This out# er nut also has a pin projecting from the inner edge of the threaded portion thereof, which pin is designed to engage in a notch torined in the outer edge of a sleeve body lil which is `carried upon the nut and which has. teeth formed upon the inner side to coact with the teeth upon the Inut. This sleeve body is also-provided with` interior threads to receive the threaded portion of the au Outer nut and the thread connection between the sleeves are so related that the pin carried -by the outer nut will be brought into position to engage a notch in the'outer edge oit' the sleeve when the elements are assembled'. The invention will be best understood trom a consideration of the following de tailed description taken in connection with the accompanying drawing, forming a part et this speciiication, with the understandttl ing, however, that the invention is not confined to any strict conformity with the draw'- ings, but may be changed or modified so long as such changes or modifications mark no material departure from the salient fea-v ld tures of the invention, as expressed in the appended claims..

ln the drawings, f

Figure l shows a nut and bolt structure'oit the type embodying this invention in side lm elevation. 4- y Y Figure 2 is an end elevation looking at the reduced end of the bolt with the nut thereon. Y ,N Figure 3 is a transverse section taken upon il the line 3 3 of Figure l, and

Figure t s a longitudinal sedeva et the throughout the several associated nut sliowingthe bolt upon whichl they are mounted in elevation.

LReferring now to the drawings in detail wherein like numerals of reference are'used to indicate corresponding parts views, the numeral l indicates the shank of a bolt, right hand threads thereon as indicated at 2, the shank l having the free outer end thereof formed to provide longitudinally eX`- tending reduced portion 3 which is provided with left hand threads 4. A

Adapted to be threaded upon the threads 2 of the shank l is the nut 5 which is of the usual hexagonal design, and formed about this nut flush with the outer end thereof is the laterally extending surrounding flange 6, .the inner surface of which is convexly curved as shown in Figure 4, and provided with the ratchet teeth formed transversely, as indicated by the numeral.

Designed to be threaded upon the reduced portion 3 of the bolt is an outer nut 8 having the enlarged circular lportion 9 formed integral therewith, which portion 9 is el the saine diameterv as the llange 6, and is provided with surrounding screwl threads. rlfhis portion 9 is also.l provided with the central cavity 10' designed to enable the nut to be threaded down over theholder ll which isformed between the shank l and the reduced portion 3. This enlarged circular portion 9ct thenut 8 also has projecting laterally therefrom a pin 12, which is arranged adia- 'cent the inner end of the 'flange formed on the enlarged portion.`

Designed to surround the enlarged por tion 9 of the nut 8 is a sleeve body 18 which is' provided with interior threads to engage the threads upon the portion 9 and one end of this sleeve is constricted and ot substantially arcuate cross section as indicated at 14 to conform'to the curved under side of the liange 6. The inner face ofthe conlstricted portion l-ot the sleeve i3 is rovided with the transverse teeth l5 w ich are designed to engage ratchet teeth 7 upon V the flange 6.

The outer edge of the sleeve l has a square notch 16 cut thereinto and a slot 17 'is formed through the body ofthe sleeve parallel with ,the outer edge thereof, for a short distance to Set up the spring tongue i8., the free end which forms one' side wall of the notch 16 as is shown in Figure 1. The inner face of this spring tongue i@ is recessed having the f dit then threaded upon the threads 2 of the bolt shank. The outer nut 8 is then threaded upon the reduced portion 3 and the threaded enlarged portion 9 is caused to enter into threaded engagement with the sleeve 13 and threaded completely thereinto unt-il the nut 5 and the outer nut 8 of the enlarged portion thereof are brought into cont-act. The threads connecting the sleeve 13 with the enlarged portion 9 of the outer nut are of the same size and number as those upon the reduced portion 3 and are so pitched as to bring the pin *12 at the proper moment to the point where the tongue 18 can be sprung outwardly to allow the pin to move into the slot 16. Whenthis locking action takesv place between the portion 9 of the outer nut and the sleeve 13, the ratchet teeth 7 and 15 will be in engagement and it will thus be seen that a positive locking connection will be made between these three elements and the bolt shank. If it is desired to release the nuts then an instrument may be inserted in the groove 19 to spring the tongue 18 outwardlv and the operation of the parts reverse to disengage them.

Having thus described my invention what I claimis: i

1. In a nut and bolt lock of the character described, a bolt member having a portion of the outer end of the shank thereof reduced and provided withjs'erew threads, and further having screw threads formed upon `the shank proper, an inner nut-adapted to,

be threaded upon said shank, a laterally extendin flange .surrounding the outer'end of saiV inner nut, ratchet teeth formed onthe under face of said flange, an outer nut adapted to be .threaded upon saidl reduced portion and having anenlarged portion designed to engage said vflange, a surrounding securing sleevevupon said inner nut, means whereby said sleeve may engage said ratchetv teeth, and means forsetting up engagement between said enlarged portion of'said outer;-

nut and the outer end of said sleeve, toV lock 'said nuts together. .v

4of of reduced size and provided with screw threads and further having screw threads formed upon the shank proper, an inner nut.

adapted to be threaded upon said shank, an outer nut designed to be threaded upon said reduced portion and bear against the outer end of said inner nut, a pin member projecting laterally from said outer nut, a sleeve member surrounding said inner nut, means to prevent said sleeve member from passing the outer end of said inner nut, and means to set up an engagement between the outer end of said sleeve member and said pin.

3. In a nut and bolt lock of the character set forth, a bolt member having the free outer end of the shank thereof of reduced size and provided with screw threads, and further having the shank proper provided with screw threads, an inner nut designed to be secured upon said shank, a surrounding` laterally extending flange adjacent the outer end of said inner nut, ratchet teeth formed upon the inner side of said flange, an outer nut adapted to -be threaded uponlthe reduced portion of said shank and having an enlarged portion designedto bear against said flange, a laterally projecting pin member carried by said enlarged portion, a sleeve designed to surround a portion of the abutting ends of said nuts, said sleeve having the inside edge thereof provided with means for engaging the teeth on said ilange, thread engaging means between the outer portion of said sleeve and the enlarged portion of said nut, and means to provide a locking engagement between the outer edge of` said sleeve and said pin.

4. In combination with a bolt having a shankand screw threads formed thereon, an inner nut threaded upon the shank of said bolt, an outer nut threaded uponsaid bolt 'and contacting with said inner nut, a'sleeve member surrounding said nuts and having engagement with the abutting ends thereof, and resilientmeans designed to automatically lock said sleeve in engagement with said outer nut to prevent reverse rotation of the sleeve 'thereaboutz i I n testimony whereof I aix my signature.

AURELIUs e. JoYAL 

